These are the overstocked products of the dealer in our warehouse. Due to the expiration of the contract, we are now selling them at special prices. Please feel free to buy！

AirGuard — Digital Carbon Monoxide & Gas Detector with Real-Time Display

Meet AirGuard, the plug-in carbon monoxide detector that shows you the actual CO level in your home — starting from 0 PPM. Unlike a standard carbon monoxide alarm that stays silent until CO hits dangerous levels, this smart CO detector with digital display gives you a live, real-time reading, so you catch a carbon monoxide leak while it's still small.

AirGuard is more than a CO monitor — it's a 4-in-1 gas detector that tracks carbon monoxide, natural gas, humidity, and temperature in one compact device. Installing this CO gas detector takes 30 seconds: plug it into any standard outlet. No tools, no wiring, no electrician.

It's the ideal carbon monoxide detector for home, apartment, rental, RV, or cabin — anywhere you have a gas stove, furnace, water heater, or generator. And the bright digital readout is daily proof your CO sensor is alive and working, unlike sealed detectors with a green light and a dead sensor.

Protect your family with AirGuard: the carbon monoxide and gas detector that shows you the number.

✓ Free US shipping ✓ 100-night trial ✓ Lifetime warranty